Photoactivable malachite green-based alkynylplatinum(II) 2,6-bis(-alkylbenzimidazol-2-yl)pyridine complexes.

Photo-responsive malachite green moieties have been incorporated into an alkynylplatinum(II) bzimpy system. The photo-caged complexes in acetonitrile solutions exhibit self-assembly properties modulable by photo-removal of the cyano protecting group. Distinct aggregate morphologies, which are facilitated by the non-covalent metal-metal and π-π stacking interactions, have been observed before and after photo-irradiation.

Photo-modulated supramolecular self-assembly of -nitrobenzyl ester-based alkynylplatinum(II) 2,6-bis(-alkylbenzimidazol-2'-yl)pyridine complexes.

The enhanced supramolecular self-assembly behaviors of photo-caged platinum(II) complexes have been triggered by applying light as the external stimulus. Distinct morphological transformation of the nanoaggregates has been observed in the photo-caged complexes before and after UV irradiation.